Question

explain why the exponents cannot be addded in the proududct 12 to the third power 11 to the third power

Answer 1

12 ^3  and 11^3   haven't got the same base  so the rules of exponents do not apply.

Bases have to be the same:-  for example 12^3 * 12*3  = 12 ^(3+3)  = 12^6